CVE-2017-7807
Publication date 10 August 2017
Last updated 25 August 2025
Ubuntu priority
Description
A mechanism that uses AppCache to hijack a URL in a domain using fallback by serving the files from a sub-path on the domain. This has been addressed by requiring fallback files be inside the manifest directory. This vulnerability affects Thunderbird < 52.3, Firefox ESR < 52.3, and Firefox < 55.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| firefox | ||
| 18.04 LTS bionic |
Fixed 55.0.2+build1-0ubuntu4
|
|
| 16.04 LTS xenial |
Fixed 55.0.1+build2-0ubuntu0.16.04.2
|
|
| 14.04 LTS trusty |
Fixed 55.0.1+build2-0ubuntu0.14.04.2
|
|
| mozjs38 | ||
| 18.04 LTS bionic |
Not affected
|
|
| 16.04 LTS xenial | Not in release | |
| 14.04 LTS trusty | Not in release | |
| thunderbird | ||
| 18.04 LTS bionic |
Fixed 1:52.4.0+build1-0ubuntu2
|
|
| 16.04 LTS xenial |
Fixed 1:52.3.0+build1-0ubuntu0.16.04.1
|
|
| 14.04 LTS trusty |
Fixed 1:52.3.0+build1-0ubuntu0.14.04.1
|
Notes
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score |
8.1 · High
|
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | Required |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | High |
| Availability impact | None |
| Vector | CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N |
References
Related Ubuntu Security Notices (USN)
- USN-3391-1
- Firefox vulnerabilities
- 15 August 2017
- USN-3416-1
- Thunderbird vulnerabilities
- 14 September 2017